Class IX

1 carat of diamond is equal to
  1. 200mg
  2. 200g
  3. 100mg
  4. 100g
Mixture can be
  1. homogeneous
  2. heterogeneous
  3. Both of these
  4. pure substance
Which of the following is NOT true about colloids?
  1. A colloid is a homogeneous solution.
  2. Colloidal particles exhibit Brownian motion.
  3. ) Colloidal particles exhibit electrophoresis.
  4. Particles in a colloid can pass through filter paper.
Nanometer is an
  1. Instrument used for measuring micro-distance
  2. Instrument used for measuring macro-distance
  3. Unit for measuring micro-distance
  4. Unit for measuring macro-distance.
Solution which has uniform composition throughout is called ___________.
  1. Colloïdal solution
  2. Homogeneous solution
  3. Heterogeneous solution
  4. None of these
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